199607688 has 96 divisors (see below), whose sum is σ = 621092160. Its totient is φ = 56730240.

The previous prime is 199607671. The next prime is 199607747. The reversal of 199607688 is 886706991.

199607688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105406 + ... + 107282.

It is an arithmetic number, because the mean of its divisors is an integer number (6469710).

Almost surely, 2^199607688 is an apocalyptic number.

199607688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199607688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310546080).

199607688 is an abundant number, since it is smaller than the sum of its proper divisors (421484472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199607688 is a wasteful number, since it uses less digits than its factorization.

199607688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107 (or 2100 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 199607688 is about 14128.2584914065. The cubic root of 199607688 is about 584.4209216031.

The spelling of 199607688 in words is "one hundred ninety-nine million, six hundred seven thousand, six hundred eighty-eight".